Collapsible mop head

ABSTRACT

A collapsible mop head for use with a mop swab having two mounting pockets therein, wherein the mop head includes two wings pivotally and longitudinally shiftably interconnected for movement between an extended operative position and a folded position, a keeper fixedly mounted on one of the wings and a latch fixedly mounted on the other of the wings, the latch and the keeper being shiftable longitudinally with the wings between a locking position holding the wings in the operative position thereof and a release position permitting pivotal movement of the wings with respect to each other to the folded position, resilient means interconnecting the wings and continually urging the wings into position wherein the latch is in position to engage the keeper, and a handle mounting structure on at least one of the wings.

United States Patent 11 1 Saltzstein June I2, 1973 [73'] Assigneec'American Uniform Company, Cleveland, Tenn.

221 Filed: June 23, 1971 21 Appl. No.: 155,693

[52] US. Cl 15/147 A [51] Int. Cl A47l 13/253 Field of Search 15/116 A,119 A,

15/120 R, 147 R, 147 A, 149, 228, 229 AP, 229 HP, 233

[56] v References Cited UNITED STATES PATENTS 3,447,182 6/1969 Shinagawa15/147 A 2,804,638 9/1957 Vosbikian et al.... 15/229 BP x 2,947,0l48/1960 OConnor et al. IS/l 19 A 3,005,220 l0/l96l McPherson 151147 A3,458,886 .8/1969 1 Gpettel 15/147 R v 3,082,456 3/1963 Short l5/l47 AFOREIGN PATENTS OR APPLICATIONS 757,299 4/1967 Canada 15/229 BP PrimaryExaminer-Daniel Blum Attorney-Curtis F. Prangley, Mark H. Clayton andDavid A. Vogel et al.

[57] ABSTRACT A collapsible mop head for use with a mop swab having twomounting pockets therein, wherein the mop head includes two wingspivotally and longitudinally shiftably interconnected for movementbetween an extended operative position and a folded position, a keeperfixedly mounted on one of the wings and a latch fixedly mounted on theother of the wings, the latch and the keeper being shiftablelongitudinally with the wings between a locking position holding thewings in the operative position thereof and a release positionpermitting pivotal movement of the wings with respect to each other tothe folded position, resilient means interconnecting the wings andcontinually urging the wings into position wherein the latch is inposition to engage the keeper, and a handle mounting structure on atleast one of the wings.

14 Claims, 6 Drawing Figures.

PATENTEU JUN 1 2mm SHEET 2 1F 2 COLLAPSIBLE MOP HEAD This invention isdirected to a collapsible mop head for use with a mop swab, andparticularly to a collapsible mop head in which the two wings thereofare pivotally and shiftably interconnected.

It is an important object of the present invention to provide acollapsible mop head for use with a mop swab having two mounting pocketstherein, the mop head comprising two wings pivotally and shiftablyinterconnected for movement between an extended operative positionwherein the wings can be disposed in the pockets of the associated mopswab and a folded position permitting ready removal of the wings fromthe pockets of an associated mop swab, a keeper fixedly mounted on oneof said wings and a latch fixedly mounted on the other of said wings,the latch and the keeper being shiftable with the wings between alocking position holding the wings in the operative position thereof anda release position permitting pivotal movement of the wings with respectto each other to the folded position, resilient means interconnectingthe wings and continually urging said wings into position wherein thelatch is in position to engage the keeper, and a handle mountingstructure on at least one of the wings.

Another object of the present invention is to provide a collapsible mophead of the type set forth in which the keeper. has a camming surfacethereon and the latch has a camming surface thereon so as to provideeasy movement of the wings from the folded position thereof to theextended operative position thereof.

A further object of the present invention is to provide a collapsiblemop head of the type set forth in which each of the wings is U-shapedand stop means are provided on the wings cooperating with the keeper andthe latch for limiting pivotal movement of the wings in the extendedoperative position thereof.

The invention both as to its organization and method of operation,together with further objects and advantages thereof, will best beunderstood by reference to the following specification taken inconnection with the accompanying drawings in which:

FIG. 1 is a top plan view of the collapsible mop head of the presentinvention in the extended operative position thereof and showing anassociated mop swab and the mop handle in phantom;

FIG. 2 is an enlarged top plan view of the central portion ofthe-invention shown in FIG. 1;

FIG. 3 is a side elevational view partly in section of the mop headshown in FIG. 2 taken along line 33 thereof; 4

FIG. 4 is a side elevational view partly in section of the mop headshown in FIG. 2 taken along line 4-4 thereof;

- FIG. 5 is a top plan view ofa portion of the mop head shown in FIG. 2showing the mop head in the folded position thereof; and

FIG. 6 is a side elevational view of the mop head frame shown in FIG. 1illustrating the frame in the folded position thereof.

There is provided a collapsible mop head 50 including a first wing 60and a second wing 80. The wings 60 and 80 are shiftably interconnectedso as to provide for both longitudinal and pivotal movement with respectto each other. The wings 60 and 80 are movable between an extendedoperative position thereof in which they are substantially coplanar anda folded position thereof in which they are free to move pivotally withrespect one to the other to accommodate insertion of the mop head 50into an associated mop swab 140. Combined with the mop head 50 and themop swab 140 is a mop handle 120.

Referring to FIG. 1 of the drawings, there is disclosed the collapsiblemop head 50 including the first wing 60 comprised of two spaced apartarms 61 interconnected by a bight 62. From the bight 62 each of the arms61 includes a diverging portion 64 leading into a parallel portion 65and then into a converging portion 66 and into another parallel portion67. At the end of the parallel portion 67, each of the arms 61terminates in an eyelet 69 having an elongated slot 70 formed therein.As may be seen therefore, the first wing 60 is in the form of asubstantially rectangular U-shaped member with the ends of the legs 61of the U-shaped member being formed of the eyelets 69.

The first wing 60 is further provided with an end bar 72 extendingtransversely of the arms 61 and interconnecting the eyelets 69, the endbar 72 being connected to the eyelets 69 as by welds 73. The first wing60 is also provided with a keeper extending transversely of the arms 61and positioned intermediate the end bar 72 and the bight 62, the keeper75 having abutment ends 76 extending beyond the respective ones of theparallel portions 67 of the arms 61. The keeper 75 is connected to thearms 61 as by welds 77.

There is also shown in FIG. 1, the second wing 80 including two spacedapart arms 81 interconnected by a bight 82. Each of the arms 81 iscomprised of a diverging portion 84 extending from the bight 82 and aparallel portion 85 extending from the diverging portion 84. At the endof the parallel portions 85 away from the diverging portions 84, thereis provided on each arm 81, a latch 88 having a camming surface 86 onone side thereof and a camming surface 87 on the other side thereof, allfor a purpose hereinafter set forth.

Near the camming surfaces 86 and 87 of each of the latches 88 there isprovided a stop bar 90 extending transversely of the arms 81 andconnected thereto as by welds 91, the stop bar 90 being intermediate thelatches 88 and the bight 82 of the second wing 80. As seen in FIG. 4,the stop bar 90 is comprised of end portions 92 which form a planeslightly above the plane formed by the arms 81 and a raised portion 93intermediate the end portions 92 and forming a plane somewhat above theplane formed by the end portions 92, the particular shape of the stopbar 90 to be hereinafter explained,

There is further provided a pivot bar 95 extending transversely of thearms 81 through the slots 70 of the eyelets 69. The pivot bar 95 isconnected to each of the arms 81 as by welds 96. As particularly shownin FIG. 3, the pivot bar 95, like the stop bar 90, is formed of endportions 96 resting on the parallel portions 85 of the arms 81 and araised portion 98 intermediate the end portions 97 and forming a planesomewhat elevated with respect to the plane formed by the end portions97. The stop bar 90 is substantially identical in shape to the pivot bar95.

There is further provided two spaced apart springs 100 shiftablyinterconnecting the first wing 60 with the second wing 80. Each of thesprings 100 has a portion 101 thereof looped around the end bar 72 ofthe first wing 60 and another portion 102 thereof looped around thepivot bar 95 which forms a part of the second wing 80 thereby shiftablyto interconnect the first wing 60 with the second wing 80. Each spring100 has a loop 103 interconnecting the portions 101 and 102, and eachspring 100 normally biases the wings 60 and 80 into position wherein thelatches 88 are in position to engage the keeper 75, as shown in FIGS. 2and 4 of the drawings. 1

There is further provided a clamping bar 110 extending parallel to thearms 61 and the arms 81 and disposed centrally thereof. The clamping bar110 inter connects the stop bar 90 with the pivot bar 95, the clampingbar 110 being connected to the stop bar 90 and the pivot bar 95 as bywelds 111. The clamping bar 110 receives the mop handle 120, which-mophandle 120 includes a wooden post 122 leading to a mop clamp 125, themop handle 120 and the mop clamp 125 being shown in phantom in FIG. 1 ofthe drawings. The mop clamp 125 includes a base plate 126 which isgenerally U-shaped and has clamping fingers 127 ex tending outwardly anddownwardly .to fit in use over the clamping bar 110. A clamping plate128 is pivotally mounted to the base plate 126 on a shaft 129 and isspring biased (by a spring not shown) to abut the base plate 126 so asfirmly to clamp the clamp 125 to the clamping bar 110 and thereby toallow pivotal movement of the handle 120 into and out of the plane ofthe paper as shown in FIG. 1. interconnecting the wooden post 122 of themop handle 120 with the mop clamp 125 is a neck 132 which may berectangular in crosssection and carries thereon a slidable collar 131,which collar 131 is of a dimensionto fit within the legs of the U-shapedbase plate 126. The neck 132 is pivotally mounted on the base plate 126so as to pivot toward and away from each of the wings 60 and 80;however, movement of the collar 131 downwardly between the legs of theU-shaped base plate 126 effectively prevents pivotal movement of the mophandle 120 toward and away from the wings 60 and 80.

There is further disclosed in FIG. 1 the mop swab 140 for use with thecollapsible mop head 50 disclosed herein, which mop swab 140 has a firstpocket 141 designed to accommodate therein the first wing 60 and asecond pocket 142 designed to accommodate therein the second wing 80.The combination of the mop handie-120 and the mop pad 140 and thecollapsible mop head 50 providing a useful dust mop for home orindustrial use.

Operation of the collapsible mop head frame 50 is hereinafter set forth.The mop head 50 is shiftable between an extended operative positionthereof, wherein said latches 88 and said keeper 75 are in a lockedposition as shown in FIGS/1, 2 and 4, wherein the first wing 60 and thesecond wing 80 are substantially coplanar and a folded position thereofwherein the first wing 60 and the second wing 80 are free for pivotalmovement with respect one to the other and said latches 88 and saidkeeper 75 are in a release position thereof. In the extended operativeposition of the mop head 50, the second wing 80 overlies the first wing60 with the parallel portions 85 of the arms 81 substantially coplanarwith the parallel portions 67 of the arms 61. The camming surfaces 86 ofthe latches 88 abut one side of the abutment ends 76 of the keeper 75,which abutment ends 76 extend beyond the parallel portions 67 of thearms 61 to prevent movement of the first wing 60 in a counterclockwisedirection, and movement of the second wing 80 in a clockwise direction,as shown in FIG. 4. The stop bar 90 abuts the parallel portions 67 ofthe arms 61 so as to prevent pivotal movement of the first wing 60 in aclockwise direction and to prevent pivotal movement of the second wingin a counterclockwise direction, as shown in FIG. 4 of the drawings. Inthe extended operative position of the mop head 50, the wings 60 and 80effectively are prevented from pivotal movement with respect to eachother by means of the cooperation between abutment ends 76 of the keeper75 and the abutment surfaces 86 of the latches 88 and the stop bar andthe parallel portions 67 of the arms 61.

When it is desired to effect movement of the mop head 50 from theextended operative position thereof to the folded position thereof, aforce must be provided against the biasing means or springs 100 whichnormally bias the second wing 80 toward the first wing 60 to a positionwherein the latches 88 are in position to engage the keeper 75, as shownin FIGS. 2 and 4. When a force is provided in the direction asillustrated by the arrow 145 in FIG. 5, the camming surfaces 86 of thelatches 88 are moved easily from abutting the keeper 75 as the pivot baris moved from the left-hand portion of the slot 70 (as shown in FIG. 4)toward the right-hand portion of the slot 70 (as shown in FIG. 6) whilethe springs are compressed. Subsequent pivotal movement of the secondwing 80 with respect to the first wing 60 in a clockwise direction, asshown by the directional arrow 150 in FIG-6, allows the wings 60 and 80to be positioned at any desired angle with each other for subsequentinsertion thereof into the pockets 141 and 142 of the mop swab 140.

Once the arms 81 of the second wing 80 have been pivoted so as toposition the camming surfaces 87 of the latches 88 away from and out ofthe plane formed by the first wing 60 and keeper 75, the force appliedagainst the springs 100 may be released with the resulting movement ofthe pivot bar 95 from the right-hand end of the slots 70 toward theleft-hand end of the slots 70, as shown in FIGS. 4 and 6 of thedrawings. Release of the pressure against the springs 100 does noteffect the pivotal movement of the wings 60 and 80 with re.- spect toeach other but does prevent movement of the wings 60 and 80 from thefolded position thereof to the extended operative position thereofwithout the application thereto of a force, which force again actsagainst the springs 100 so as to move the pivot bar 95 from theleft-hand end of the slots 70 to the right-hand end of the slots 70asillustrated in FIGS. 4 and 6.

When the wings 60 and 80 are in the folded position thereof they may beconveniently inserted into the pockets 141 and 142 of the mop swab 140.If the mop swab 140 is positioned on a support surface such as the floorand the wings 60 and 80 allowed to come to a neutral rest position, theabutment surface 87 of the latches 88 will rest on top of the keeper 75but the wings 60 and 80 will still be in the folded position thereof.Placement of the mop clamp 125 on the clamping bar followed by adownward movement will result in movement of the wings 60 and 80 fromthe folded position thereof to the extended operative position thereof.Due to the camming surface 87 on the latches 88 and the rod-like shapeof the keeper 75 which acts as a camming surface, a vertically directedforce against the clamping bar 110 will be at least partiallytransformed into a laterally directed force working against the springs100 so as to compress the same and move the pivot bar 95 to the right asshown in FIG. 6, thereby resulting in the position there illustrated infull line. Subsequent release of the downward pressure against theclamping bar 110 will result in movement of the springs 100 to theirnormally biased position in which the pivot bar 95 is positioned in theleft-hand ends of the slots and the camming surfaces 86 of the latches88 abut the abutment ends 76 of the keeper 75, so to position the wings60 and in the extended operative position thereof.

The particular shape of the stop bar 90 and the pivot bar provides forclearance between the mop handle 120 and the mop swab 140. Additionally,pivotal movement of the mop handle 120 with respect to the mop head 50is assured by means of the shape of the stop bar 90 and the pivot bar95.

Removal of the mop head 50 from the mop swab 140 is also easily effectedwhen the mop handle 120 is in place. By moving the collar 131intermediate the legs of the U-shaped base plate 126 pivotal movement ofthe mop handle 120 toward and away from the bights 62 and 82 of thefirst wing 60 and the second wing 80 is effectively prevented. By thesimple expedient of standing .on the first wing 60 it is not difficultto apply a force through the mop handle 120, the clamping bar 110, andthe pivot bar 95 against the springs so as to compress the same and movethe pivot bar 95 from the left-hand end of the slots 70 toward theright-hand end of the slots 70 and simultaneously move the cammingsurface 86 of the latches 88 away from the keeper '75. Subsequentlifting of the mop handle -pivots the second wing 80 with respect to thefirst wing 60 and assures easy removal of the mop head 50 from the mopswab 140.

From the foregoing it is seen that there has been provided a collapsiblemop head in which the wings thereof are shiftably interconnected and maybe moved from a folded position thereof in which they are easilyintroduced into and removed from an associated mop pad to an extendedoperative position thereof in which they may be securelypositioned-within the mop pad to form'a useful combination.

While there has been described what is at present considered to be thepreferred embodiment of the invention, it will be understood thatvarious modifications may be made therein and it is intended to cover inthe appended claims all such modifications as seen within the truespirit and scope of the invention.

What is claimed is:

l. A collapsible mop head for use with a mop swab having two mountingpockets therein, said mop head comprising two wings pivotally andlongitudinally shiftably interconnected one to the other for movementbetween an extended operative position wherein said wings can bedisposed in the pockets of the associated mop swab and a folded positionpermitting ready removal of said wings from'the pockets of theassociated mop swab, a keeper fixedly mounted on one of said wings and alatch fixedly mounted on the other of said wings, said latch and saidkeeper being shiftable longitudinally with said wings between a lockingposition holding said wings in the operative position thereof and arelease position permitting pivotal movement of said wings with respectto each other to said folded position, resilient means interconnectingsaid wings and continually urging said wings into position wherein saidlatch is in position to engage said keeper, and a handle mountingstructure on at least one of said wings.

2. The collapsible mop head set forth in claim 1, wherein each of saidwings is substantially rectangular in shape and is tapered at the endthereof.

3. The collapsible mop head set forth in claim 1, wherein a stop meansis mounted on said wings cooperating with said keeper and said latch forlimiting pivotal movement of said wings in the extended operativeposition thereof.

4. The collapsible mop head set forth in claim 1, wherein said resilientmeans comprises two spaced apart springs.

5. A collapsible mop head for use with a mop swab having twomountingpockets therein, said mop head comprising two wings pivotallyand longitudinally shiftably interconnected for movement between anextended operative position wherein said wings can be disposed in thepockets of the associated mop swab and a folded position permittingready removal of said wings from the pockets of the associated mop swab,a keeper having a camming surface thereon fixedly mounted on one of saidwings and a latch having a chamfered camming surface thereon fixedlymounted on the other of said wings, said latch having said cammingsurface thereon and said keeper having said camming surface thereonbeing longitudinally shiftable with said wings between a lockingposition holding said wings in the operative position thereof and arelease position permitting pivotal movement of said wings with respectto each other to said folded position, resilient means interconnectingsaid wings and continually urging said wings into position wherein saidlatch is in position to engage said keeper, and a handle mountingstructure on at least one of said wings, whereby placement of said wingson a support surface followed by pushing said wings against said supportsurface results in said camming surfaces on said latch and on saidkeeper cooperating to provide easy movement of said wings from thefolded position thereof to the extended operative position thereof.

6. The collapsible mop head as set forth in claim 5, wherein said keeperis a rod, the peripheral surface thereof acting as said camming surface.

7. The collapsible mop head as set forth in claim 5, wherein said latchis a rod having the ends thereof chamfered to provide cam ming surfaceson two sides of the end of said rod.

8. A collapsible mop head for use with a mop swab having two mountingpockets therein, said mop head comprising a first generally U-shapedwing having first spaced-apart legs and a first bight interconnectingsaid first legs, a keeper fixedly mounted on said first legs positionedintermediate said first bight and the ends of said first legs, a secondgenerally U-shaped wing having second spaced-apart legs and a secondbight interconnecting said second legs, a latch mounted on said secondlegs at the ends thereof, said wings being pivotally and longitudinallyshiftably interconnected for movement between an extended operativeposition wherein said wings can be disposed in the pockets of theassociated mop swab and a folded position wherein said wings are freefor pivotal movement with respect to one another permitting readyremoval of said wings from the pockets of the associated mop swab, stopmeans mounted on said wings cooperating with said keeper and latch forlimiting pivotal movement of said wingsurging sald wings into positionwherein said latch is in position to engage said keeper, and a handlemounting structure on at least one of said wings.

9. The collapsible mop head as set forth in claim 8, wherein said keeperis a rod extending transversely of said first legs. i

having two mounting pockets therein, said mop head comprising two wingspivotally and shiftably interconnected for longitudinal movement betweenan extended operative position wherein said wings can be disposed inthepockets of the associated mop swab and a folded position permittingready removal of said wings from the pockets of the associated mop swab,a keeper having a camming surface thereon fixedly mounted on one of saidwings and a latch having a camming surface thereon fixedly mounted onthe other of said wings, said latch having said camming surface thereonand said keeper having said camming surface thereon being shiftable withsaid wings between a locki ing position holding said wings in theoperative position thereof and a release position permitting pivotalmovement of said wings with respect to each other to said foldedposition, resilient means interconnecting said wings and continuallyurging said wings into position wherein said latch is in position toengage said keeper,

and a handle mounting structure on at least one of said wings, wherebyplacement of said wingson a support surface followed by pushing saidwings against said support surface results in said camming surfaces onsaid latch and on said keeper cooperating to provideeasy movement ofsaid wings from the folded position thereof to the extended operativeposition thereof.

14. A collapsible mop head for use with a mop swab having two mountingpockets therein, said mop head comprising a first generally .U-shapedwing having first spaced-apart legs with each of the ends thereof formedinto an elongated eyelet and a first bight interconnecting said firstlegs, a keeper fixedly mounted on said first legs positionedintermediate said first bight and the ends of said first legs, a secondgenerally U-shaped wing having second spaced-apart legs and a secondbight interconnecting said second legs, a latch mounted on said secondlegs at the ends thereof, means mounted on said second legs extendingthrough each of said eyelets so as to interconnect said first and.second wing for longitudinal and pivotal movement with respect to eachother between an extended operative position wherein said wings can bedisposed in the pockets of the associated mop swab and a folded positionwherein said wings are free for pivotal movement with respect to oneanother permitting ready removal of said wings from the pockets of theassociated mop swab, stop means mounted on said wings cooperating withsaid keeper and latch for limiting pivotal movement of said wings in theextended operative position thereof, resilient means continually urgingsaid wings into position wherein said latch is in position to engagesaid keeper, and a handle mounting structure on at least one of saidwings.

1. A collapsible mop head for use with a mop swab having two mountingpockets therein, said mop head comprising two wings pivotally andlongitudinally shiftably interconnected one to the other for movementbetween an extended operative position wherein said wings can bedisposed in the pockets of the associated mop swab and a folded positionpermitting ready removal of said wings from the pockets of theassociated mop swab, a keeper fixedly mounted on one of said wings and alatch fixedly mounted on the other of said wings, said latch and saidkeeper being shiftable longitudinally with said wings between a lockingposition holding said wings in the operative position thereof and arelease position permitting pivotal movement of said wings with respectto each other to said folded position, resilient means interconnectingsaid wings and continually urging said wings into position wherein saidlatch is in position to engage said keeper, and a handle mountingstructure on at least one of said wings.
 2. The collapsible mop head setforth in claim 1, wherein each of said wings is substantiallyrectangular in shape and is tapered at the end thereof.
 3. Thecollapsible mop head set forth in claim 1, wherein a stop means ismounted on said wings cooperating with said keeper and said latch forlimiting pivotal movement of said wings in the extended operativeposition thereof.
 4. The collapsible mop head set forth in claim 1,wherein said resilient means comprises two spaced apart springs.
 5. Acollapsible mop head for use with a mop swab having two mounting pocketstherein, said mop head comprising two wings pivotally and longitudinallyshiftably interconnected for movement between an extended operativeposition wherein said wings can be disposed in the pockets of theassociated mop swab and a folded position permitting ready removal ofsaid wings from the pockets of the associated mop swab, a keeper havinga camming surface thereon fixedly mounted on one of said wings and alatch having a chamfered camming surface thereon fixedly mounted on theother of said wings, said latch having said camming surface thereon andsaid keeper having said camming surface thereon being longitudinallyshiftable with said wings between a locking position holding said wingsin the operative position thereof and a release position peRmittingpivotal movement of said wings with respect to each other to said foldedposition, resilient means interconnecting said wings and continuallyurging said wings into position wherein said latch is in position toengage said keeper, and a handle mounting structure on at least one ofsaid wings, whereby placement of said wings on a support surfacefollowed by pushing said wings against said support surface results insaid camming surfaces on said latch and on said keeper cooperating toprovide easy movement of said wings from the folded position thereof tothe extended operative position thereof.
 6. The collapsible mop head asset forth in claim 5, wherein said keeper is a rod, the peripheralsurface thereof acting as said camming surface.
 7. The collapsible mophead as set forth in claim 5, wherein said latch is a rod having theends thereof chamfered to provide camming surfaces on two sides of theend of said rod.
 8. A collapsible mop head for use with a mop swabhaving two mounting pockets therein, said mop head comprising a firstgenerally U-shaped wing having first spaced-apart legs and a first bightinterconnecting said first legs, a keeper fixedly mounted on said firstlegs positioned intermediate said first bight and the ends of said firstlegs, a second generally U-shaped wing having second spaced-apart legsand a second bight interconnecting said second legs, a latch mounted onsaid second legs at the ends thereof, said wings being pivotally andlongitudinally shiftably interconnected for movement between an extendedoperative position wherein said wings can be disposed in the pockets ofthe associated mop swab and a folded position wherein said wings arefree for pivotal movement with respect to one another permitting readyremoval of said wings from the pockets of the associated mop swab, stopmeans mounted on said wings cooperating with said keeper and latch forlimiting pivotal movement of said wings in the extended operativeposition thereof, resilient means interconnecting said wings andcontinually urging saId wings into position wherein said latch is inposition to engage said keeper, and a handle mounting structure on atleast one of said wings.
 9. The collapsible mop head as set forth inclaim 8, wherein said keeper is a rod extending transversely of saidfirst legs.
 10. The collapsible mop head as set forth in claim 8,wherein said latch is integral with said second legs and formed of theends thereof.
 11. The collapsible mop head as set forth in claim 8,wherein said stop means is a rod extending transversely of said secondwing legs.
 12. The collapsible mop head as set forth in claim 8, whereinsaid resilient means is a pair of spaced-apart springs.
 13. Acollapsible mop head for use with a mop swab having two mounting pocketstherein, said mop head comprising two wings pivotally and shiftablyinterconnected for longitudinal movement between an extended operativeposition wherein said wings can be disposed in the pockets of theassociated mop swab and a folded position permitting ready removal ofsaid wings from the pockets of the associated mop swab, a keeper havinga camming surface thereon fixedly mounted on one of said wings and alatch having a camming surface thereon fixedly mounted on the other ofsaid wings, said latch having said camming surface thereon and saidkeeper having said camming surface thereon being shiftable with saidwings between a locking position holding said wings in the operativeposition thereof and a release position permitting pivotal movement ofsaid wings with respect to each other to said folded position, resilientmeans interconnecting said wings and continually urging said wings intoposition wherein said latch is in position to engage said keeper, and ahandle mounting structure on at least one of said wings, wherebyplacement of said wings on a support surface followed by pushing saidwings against said support surface results in said camming surfaces onsaid latch and on said keePer cooperating to provide easy movement ofsaid wings from the folded position thereof to the extended operativeposition thereof.
 14. A collapsible mop head for use with a mop swabhaving two mounting pockets therein, said mop head comprising a firstgenerally U-shaped wing having first spaced-apart legs with each of theends thereof formed into an elongated eyelet and a first bightinterconnecting said first legs, a keeper fixedly mounted on said firstlegs positioned intermediate said first bight and the ends of said firstlegs, a second generally U-shaped wing having second spaced-apart legsand a second bight interconnecting said second legs, a latch mounted onsaid second legs at the ends thereof, means mounted on said second legsextending through each of said eyelets so as to interconnect said firstand second wing for longitudinal and pivotal movement with respect toeach other between an extended operative position wherein said wings canbe disposed in the pockets of the associated mop swab and a foldedposition wherein said wings are free for pivotal movement with respectto one another permitting ready removal of said wings from the pocketsof the associated mop swab, stop means mounted on said wings cooperatingwith said keeper and latch for limiting pivotal movement of said wingsin the extended operative position thereof, resilient means continuallyurging said wings into position wherein said latch is in position toengage said keeper, and a handle mounting structure on at least one ofsaid wings.